<template>
    <div>
        <!-- 面包屑 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>权限管理</el-breadcrumb-item>
            <el-breadcrumb-item>角色列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 面包屑 -->

        <el-card>
            <el-row>
                <el-col>
                    <el-button type="primary" @click="addDialogVisible=true">添加角色</el-button>
                </el-col>
            </el-row>
        </el-card>

        <!-- 角色列表区域 -->
        <el-table :data="rolelist" border stripe>
                <!-- 展开列 -->
                <el-table-column type="expand">
                    <template slot-scope="scope">
                        <el-row :class="['bdbottom',i1===0 ? 'bdtop':'', 'vcenter']" v-for="(item1,i1) in scope.row.children" :key="item1.id"> 
                            <!-- 渲染一级权限 -->
                            <el-col :span="5">
                               <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag> 
                               <i class="el-icon-caret-right"></i>
                            </el-col>
                            <!-- 渲染二级和三级权限 -->
                            <el-col :span="19">
                                <!-- 通过for 嵌套渲染二级权限 -->
                                <el-row :class="[i2===0 ? '':'bdtop','vcenter']" v-for="(item2,i2) in item1.children" :key="item2.id">
                                    <el-col :span="6">
                                        <el-tag type="success" closable @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                                        <i class="el-icon-caret-right"></i>
                                    </el-col>
                                    <el-col :span="18">
                                        <el-tag type="warning" v-for="(item3,i3) in item2.children" :key="item3.id" closable @close="removeRightById(scope.row,item3.id)">
                                            {{item3.authName}}
                                        </el-tag>
                                    </el-col>
                                </el-row>
                                
                            </el-col>
                        </el-row>

                        <!-- <pre>
                        {{scope.row}}
                        </pre> -->
                    </template>
                </el-table-column>
                <!-- 索引列  -->
                <el-table-column type="index"></el-table-column>
                <el-table-column label="角色名称" prop="roleName"></el-table-column>
                <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
                <el-table-column label="操作">
                  <template slot-scope="scope">
                    <el-button type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.id)">编辑</el-button>
                    <el-button type="danger" icon="el-icon-delete" @click="deletebutton(scope.row.id)">删除</el-button>
                    <el-button type="warning" icon="el-icon-setting" @click="showSetRightDialog(scope.row)">分配权限</el-button>
                    
                  </template>
                </el-table-column>
        </el-table>
        <!-- 角色列表区域 -->
        




        <!-- 添加对话框 -->
            <el-dialog
            title="添加角色"
            :visible.sync="addDialogVisible"
            width="50%"
            @close="addDialogClosed"
            >
            <!-- 内容 -->
            <el-form :model="AddRole" :rules="AddRoleRules" ref="addFormRef" label-width="80px">
                <el-form-item label="角色名称" prop="roleName">
                    <el-input v-model="AddRole.roleName"></el-input>
                </el-form-item>

            
                <el-form-item label="角色描述" prop="roleDesc">
                    <el-input v-model="AddRole.roleDesc"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible=false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
            
        </el-dialog>
       <!-- 添加对话框 -->


       <!-- 修改对话框 -->
            <el-dialog
            title="修改用户"
            :visible.sync="showEditDialogVisible"
            width="50%"
            @close="editDialogClosed"
            >
            <!-- 内容 -->
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="80px">
                <el-form-item label="角色名称" prop="roleName">
                    <el-input v-model="editForm.roleName"></el-input>
                </el-form-item>

                <el-form-item label="角色描述" prop="roleDesc">
                    <el-input v-model="editForm.roleDesc"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="showEditDialogVisible=false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
            
        </el-dialog>
       <!-- 修改对话框 -->

       <!-- 分配权限的对话框 -->
        <el-dialog
            title="分配权限"
            :visible.sync="setRightDialogVisible"
            width="50%"
            @close="setRightDialogClosed"
            >
            
            <!-- 树形控件 -->
           <el-tree :data="rightslist" :props="treeProps" show-checkbox node-key="id" default-expand-all :default-checked-keys="defKeys" ref="treeRef"></el-tree>
            <!-- 底部区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRightDialogVisible=false">取 消</el-button>
                <el-button type="primary"  @click="allotRights">确 定</el-button>
            </span>
            
        </el-dialog>
       <!-- 分配权限的对话框 -->

    </div>
</template>

<script>
export default {
    data(){
        return{
            //所有角色列表数据
            rolelist:[],
            //控制添加对话框
            addDialogVisible:false,
            //添加用户的数据对象
            AddRole:{
                 roleName:'',
                 roleDesc:''   
            },
            //添加的验证规则对象
            AddRoleRules:{
                roleName:[{required:true,message:'请输入角色名称',trigger:'blur'},
                         {min:3,max:10,message:'用户名的长度在3~10个字符之间',trigger:'blur'}
                         ],
                roleDesc:[{required:true,message:'请输入角色描述',trigger:'blur'},
                         {min:3,max:10,message:'用户名的长度在3~10个字符之间',trigger:'blur'}
                         ]
            },
            //控制修改对话框
            showEditDialogVisible:false,
            //查询到的用户数据对象
            editForm:{},
           //修改的验证规则对象
            editFormRules:{
                roleName:[{required:true,message:'请输入角色名称',trigger:'blur'},
                         {min:3,max:10,message:'用户名的长度在3~10个字符之间',trigger:'blur'}
                         ],
                roleDesc:[{required:true,message:'请输入角色描述',trigger:'blur'},
                         {min:3,max:10,message:'用户名的长度在3~10个字符之间',trigger:'blur'}
                         ]
            },
            //控制分配权限对话框
            setRightDialogVisible:false,
            //获取所以的权限的数据
            rightslist:[],
            //树形控件的属性判定对象
            treeProps:{
                label:'authName',
                children:'children'
            },
            //默认选中的节点id值数组
            defKeys:[],
            //当前即将分配权限的角色id
            roleId:''
            
            

        }
    },
    methods:{
        //获取所以的角色列表数据
        async getRolesList(){
            const {data:res} =await this.$http.get('roles')
            if(res.meta.status!==200){
                return this.$message.console.error('获取角色列表失败');
            }
            this.rolelist=res.data
            console.log(this.rolelist);
        },
         //监听添加角色对话框的关闭事件
        addDialogClosed(){
            this.$refs.addFormRef.resetFields()
        },
        //点击按钮，添加新角色
        addUser(){
            this.$refs.addFormRef.validate(async valid=>{
                if(!valid){return}
                const {data:res}=await this.$http.post('roles',this.AddRole)
                if(res.meta.status!==200){
                    this.$message.error('添加用户失败')
                }
                this.$message.success('添加用户成功')
                //隐藏添加对话框
               this.addDialogVisible=false
               //重新获取用户列表的数据
               this.getRolesList();
            })
        },
        //点击按钮删除
        async deletebutton(id){
        //弹框询问用户是否删除
      const confirmResult = await this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=> err)
        //如果用户点了确定删除，则返回值为字符串 confirm
        //如果用户点了取消删除，则返回值为字符串 cancel
        if(confirmResult !="confirm"){
            return this.$message.info('已取消删除')
        }
        const {data:res} = await this.$http.delete(`roles/${id}`)
        if(res.meta.status!==200){
        return this.$message.error('删除用户失败')
        }
        this.$message.success('删除用户成功')
        //重新获取用户列表的数据
        this.getRolesList();

        },
        //监听修改用户对话框的关闭事件
        editDialogClosed(){
            this.$refs.editFormRef.resetFields()
        },
        //展示编辑用户的对话框
       async showEditDialog(id){
            const {data:res} =await this.$http.get(`roles/${id}`)
            this.editForm=res.data
            this.showEditDialogVisible=true
            console.log(this.editForm)
        },
        //修改用户信息并提交
        async editUserInfo(id){
            this.$refs.editFormRef.validate(async valid=>{
                if(!valid){return}
                console.log(this.editForm.roleId)
                //发起修改用户信息的数据请求
                const {data:res} = await this.$http.put('roles/'+this.editForm.roleId,{
                    roleName:this.editForm.roleName,roleDesc:this.editForm.roleDesc
                })
                if(res.meta.status !==200){
                    return this.$message.error('更新角色信息失败')
                }
                this.$message.success('更新角色信息成功')
                //隐藏修改对话框
               this.showEditDialogVisible=false
               //重新获取用户列表的数据
               this.getRolesList();
        })
        },
        //根据Id删除对应的权限
        async removeRightById(role,rightId){
            //弹窗提示用户是否要删除
        const confirmResult = await this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=> err)
        //如果用户点了确定删除，则返回值为字符串 confirm
        //如果用户点了取消删除，则返回值为字符串 cancel
        if(confirmResult !="confirm"){
            return this.$message.info('已取消删除')
        }
        const {data:res} = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
            if(res.meta.status!==200){
                return this.$message.error('删除权限失败')
            }

            //重新获取数据
            //this.getRolesList();
            role.children=res.data
        },
        //展示分配权限的对话框
        async showSetRightDialog(role){
              this.roleId=role.id
              const {data:res}= await this.$http.get('rights/'+'tree')

              if(res.meta.status!==200){
                  this.$message.error('获取权限失败')
              }
              //获取到的权限数据
              this.rightslist=res.data
              //console.log(this.rightslist)
            
              //递归获取三级节点的id
              this.getLeafKeys(role,this.defKeys)
              //console.log(role);
              //打开分配权限的对话框
              this.setRightDialogVisible=true

        },
        //通过递归的形式，获取角色下所以三级权限的id,并保存到 defKeys 数组中
        getLeafKeys(node,arr){
            //如果当前 node 节点不包含 Children 属性，则是三级节点
            if(!node.children){
                return arr.push(node.id)
            }
            
           node.children.forEach(item => 
            this.getLeafKeys(item, arr))
          


        },
        // //监听分配权限对话框的关闭事件
        setRightDialogClosed(){
            this.defKeys=[]
        },
        //点击为角色分配权限
        async allotRights(){
            const keys=[
                ...this.$refs.treeRef.getCheckedKeys(),
                this.$refs.treeRef.getHalfCheckedKeys()
            ]

            const idStr=keys.join(',')

            console.log(keys)

          const {data:res}=await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})

          if(res.meta.status!==200){
              this.$message.error('分配权限失败')
          }

          this.$message.success('分配权限成功')
          this.getRolesList()

          this.setRightDialogVisible=false
        }


    },
    created(){
        this.getRolesList();
    

    }

}
</script>

<style lang="less" scoped>
.el-breadcrumb{
    margin-bottom: 15px;
    font-size: 12px;
}
.el-card{
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.15) !important;
}
.el-tag{
     margin:10px 0 10px 20px;
    // margin:7px;
}

.bdtop{
    border-top: 1px solid #eee;
}

.bdbottom{
    border-bottom: 1px solid #eee;
}
.vcenter{
    display: flex;
    align-items: center;
}


</style>